v2.0 BREAKING — Calcula imposto sobre stock options brasileiras com TRANCHES (vesting trimestral/anual): carnê-leão por tranche (RSU/NSO/ISO) + GCAP agregado na venda (15-22,5%, Lei 13.259/16). Solução de Consulta COSIT 130/2017. Considera câmbio próprio em cada tranche. Retorna: liquidoFinalCent...
AI agents call calcular_stock_options_vesting_ir to retrieve information from Contaí — Calculadoras Fiscais Brasileiras without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
tranches | array | Yes | Tranches de vesting (1 a 50). Cada tranche tem data, strike, preço de mercado, quantidade e câmbio próprios. |
cambioVendaBrl | number | — | Câmbio USD/BRL médio na data da venda. Ex: 5.20 |
tipoInstrumento | string | Yes | Tipo de instrumento: rsu_acoes_restritas | nso_opcao_compra | iso_opcao_compra | bdr |
precoVendaUsdCents | integer | Yes | Preço de venda das ações em USD em centavos (mesmo para todas as tranches). |
vendaEmBolsaBrasileira | boolean | — | true se a venda ocorre em bolsa brasileira (isenção R$ 35k/mês se receita total dentro do limite). |
Parameters from the server's own tool schema.
This is a financial calculator that computes tax obligations on Brazilian stock options using tax law formulas (Lei 13.259/16, COSIT 130/2017). Although the domain is financial and the output informs tax liabilities, the tool itself only reads input values, applies deterministic formulas, and returns calculated results.
From the tool's definition Tool name and description indicate it 'Calcula' (calculates) and 'Retorna' (returns) computed tax metrics for stock options vesting.
Risk signalsHigh parameter count (11 properties)
Attacks that exploit this kind of access
v2.0 BREAKING — Calcula imposto sobre stock options brasileiras com TRANCHES (vesting trimestral/anual): carnê-leão por tranche (RSU/NSO/ISO) + GCAP agregado na venda (15-22,5%, Lei 13.259/16). Solução de Consulta COSIT 130/2017. Considera câmbio próprio em cada tranche. Retorna: liquidoFinalCents, tributoTotalCents, irFatoGeradorVestingTotalCents, irGanhoCapitalVendaCents, aliquotaEfetivaTotalPercent, isencaoBolsaBrAplicada, porTranche[]. It is categorised as a Read tool in the Contaí — Calculadoras Fiscais Brasileiras MCP Server, which means it retrieves data without modifying state.
calcular_stock_options_vesting_ir accepts 5 parameters: tranches, cambioVendaBrl, tipoInstrumento, precoVendaUsdCents, vendaEmBolsaBrasileira. Required: tranches, tipoInstrumento, precoVendaUsdCents. The full parameter table on this page comes from the server's own tool schema.
Register the Contaí — Calculadoras Fiscais Brasileiras MCP server in PolicyLayer and add a rule for calcular_stock_options_vesting_ir: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Contaí — Calculadoras Fiscais Brasileiras. Nothing to install.
calcular_stock_options_vesting_ir is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the calcular_stock_options_vesting_ir rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for calcular_stock_options_vesting_ir. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
calcular_stock_options_vesting_ir is provided by the Contaí — Calculadoras Fiscais Brasileiras MCP server (@contai-evoluke/mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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